CFR /  Title 12  /  Part 210  /  Sec. 210.2 Definitions.

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(p) Clock hour and clock half-hour. (1) Clock hour means a time that is on the hour, such as 1:00, 2:00, etc.

(1) Clock hour means a time that is on the hour, such as 1:00, 2:00, etc.

(2) Clock half-hour means a time that is on the half-hour, such as 1:30, 2:30, etc.

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